title: Regarding the development and practice of cascade impaction testing, including a mass balance failure investigation tree.
mesh_terms: D000280:Administration, Inhalation; D000336:Aerosols / Q000493:pharmacokinetics / Q000494:pharmacology*; D004867:Equipment Design; D004869:Equipment Safety; D006801:Humans; D008422:Materials Testing; D009330:Nebulizers and Vaporizers; D010316:Particle Size; D012680:Sensitivity and Specificity
chemical_list: D000336:Aerosols